You will need to rehydrate the mushrooms before you use them, which results in a liquid base you can use for broths or sauces. Don't limit yourself to using dried shiitake mushrooms in Asian-inspired dishes, either. They'll work in a variety of dishes, like soup, risotto and pureed spreads. You can stock up on them because they'll last for months as long as you store them in an airtight container in a cool spot. For recipe suggestions with dried shiitake mushrooms, check out the post linked below.